During coal mining, the fully-mechanized tunnel is always under high-concentration of dust pollution. This brings not only the potential risk of dust explosion but also makes the tunnel workers suffer from coal mine pneumoconiosis (CWP), a systemic disease featured by pulmonary fibrosis. Therefore, it is extremely important to establish a theory and optimal parameters for dust control over fully-mechanized excavating tunnels. In this study, we analyzed the dust diffusion under several parameters, including the distance between the forced air opening and the cutting face (L_Y), the height of the forced air cylinder above the floor (L_H), and the distance between the center of the forced air cylinder and the nearest coal wall (L_J). The optimal dust control parameters were determined as: L_Y = 20 m, L_H = 3 m and L_J = 0.6 m. Under this condition, the airflow can effectively suppress the diffusion of dust particles. At the same time, the operating environment of the roadheader driver was remarkably improved and the requirements on miners’ occupational health and safe production were satisfied. The present study proposed a new approach for occupational health of the workers in the excavating tunnel and clean production management.

在煤矿开采过程中，全机械化隧道始终处于高粉尘污染的状态。这不仅带来了粉尘爆炸的潜在风险，而且使隧道工人患有煤矿尘肺病（CWP），这是一种以肺纤维化为特征的全身性疾病。因此，建立综采巷道除尘的理论和最佳参数极为重要。在这项研究中，我们分析了灰尘在多个参数下的扩散情况，包括强制空气开口与切割面之间的距离（L _Y），强制气缸在地板上方的高度（L _H）以及强制气缸的中心和最近的煤壁（L _J）。最佳粉尘控制参数确定为：L _Y  = 20 m，L _H  = 3 m，L _J  = 0.6 m。在这种情况下，气流可以有效地抑制灰尘颗粒的扩散。同时，掘进机驾驶员的工作环境得到明显改善，满足了矿工职业健康和安全生产的要求。本研究提出了一种在开挖隧道和清洁生产管理中工人职业健康的新方法。